Q159
Which development method is used when fast access to deep ore is needed?
A.
Inclined shaft
B.
Spiral ramp
C.
Vertical shaft sinking
AnswerD.
Raise boring
Answer: Option C
Solution
Answer: Option C
Solution:
Vertical shaft sinking provides direct, quick access to deep ore zones.The correct answer is: Vertical shaft sinkingFaster than ramps for deep deposits.Used for hoisting, ventilation, and transport.